Patent
   D287621
Priority
Apr 12 1984
Filed
Apr 12 1984
Issued
Jan 06 1987
Expiry
Jan 06 2001
Assg.orig
Entity
unknown
2
18
n/a
The ornamental design for a clean air work station, as shown and described.

FIG. 1 is a front elevational view of a clean air work station, showing my new design;

FIG. 2 is a right side elevational view, the left side being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof.

Shields, William R.

Patent Priority Assignee Title
6632260, Apr 28 1999 Stratotech Corporation Adjustable clean-air flow environment
D419241, Oct 16 1998 Phytoculture micro flow work station
Patent Priority Assignee Title
1934808,
3273323,
3284148,
3340788,
3425335,
3726206,
3728866,
3811250,
3895570,
3897721,
4249463, May 23 1978 HOWORTH AIRTECH LIMITED, VICTORIA WORKS, Workstation
4267769, Feb 22 1979 ENVIROCO CORP Prefabricated knockdown clean room
4534281, Sep 26 1983 Labconco Corporation Laboratory fume hood
201678,
206001,
221846,
221847,
224737,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 04 1984SHIELDS, WILLIAM R ENVIRONMENTAL AIR CONTROL COMPANY, INC ASSIGNMENT OF ASSIGNORS INTEREST 0042470733 pdf
Apr 12 1984Environmental Air Control, Inc.(assignment on the face of the patent)
Dec 28 1992ENVIRONMENTAL AIR CONTROL, INC Donaldson Company, IncASSIGNMENT OF ASSIGNORS INTEREST 0064490362 pdf
Feb 11 1993ENVIRCO CORP ALLIED INVESTMENT CORPORATION IIASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0065370722 pdf
Feb 11 1993ENVIRCO CORP ALLIED INVESTMENT CORPORATIONASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0065370722 pdf
Feb 11 1993Donaldson Company, IncENVIRCO CORP ASSIGNMENT OF ASSIGNORS INTEREST 0064490355 pdf
Jun 22 1994Envirco CorporationSUNWEST BANK OF ALBUQUERQUE N A SECURITY INTEREST SEE DOCUMENT FOR DETAILS 0071480718 pdf
Aug 09 1994ALLIED INVESTMENT CORPORATION II, A CORP OF MDENVIROCO CORP ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0073040986 pdf
Aug 09 1994ALLIED INVESTMENT CORPORATION, A CORP OF MDENVIROCO CORP ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0073040986 pdf
Jul 28 1995SUNWEST BANK OF ALBUQUERQUE, NA Envirco CorporationRELEASED0075960153 pdf
Jul 25 2000Envirco CorporationCongress Financial CorporationSECURITY INTEREST SEE DOCUMENT FOR DETAILS 0112130622 pdf
Mar 20 2007WACHOVIA BANK, NAEnvirco CorporationRELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS 0190470619 pdf
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